Haslero
New member
- Joined
- Sep 6, 2018
- Messages
- 16
Hello battery freaks out there
I want to introduce myself to the forum. This is the first time ever i am writingsomething in a forum like that, i understand the benefits of swapping information regarding the same topics. I read a lot of stuff about batteries the last couple of weeksand how to safely handle them. I am scared but also fascinated about these cells and when you never risk something you will never get rewarded. I am 35 years old engineer and studied some mechatronics and machine tools stuff. So i have a little background in electronics, but not batteries. I did a lot of Rasperry and Arduino Projects and stuff like this.this is how i get here.
My first plan is to replace my car by a ebike (one full gas tank =, i will need a good battery for that bafang 1kw motor i ordered.
Second plan buy the house we are in, put a pv system on the roof and build a diy powerwall in my garage.
With the heat pump,pv system, powerwall and the ebike iwould be almost CO2 neutral. Would I?
i want to do this mostly with recycled batteries if i can, from a green view i like this idea very much.
Icollected about 150 cells and ordered 100 new Samsung INR18650-25E.Checkedall cells on capacity, self discharging and internal resistance and tried to decide which ones are the good and bad ones. not that easy than i thought it was. Does the internal resistance change over the battery lifetime? Is comparing the capacity with its original capacitya good indicator? Still a long way to go.
I alsomade a deal with an ebike shop and i can pick up their "old" ebike accumulators. go there tomorrow to get the first few.
thanks to all who share your information and journey through this secondstoragelife. and averagejoe and hppowerwall about their fantastic videos.
my way would be to spotweld the fuses to the battery
. can i do that?i ordered also some of these chinese spotwelders. any bets how long it will last?
Is it also good to fuse every cell in the ebike battery? How would that work with the nickel strips?
one last question. i know theSamsung INR18650-25E isn't the best joice for that ebike batterie. but would it work with a 14s7p configuration and the bafang motor? 20A cont, 56A peak? The bbshd motorwould need 30A max. or am i wrong? Continous?
Also a few pics from my journey:
My DIY Lab, recycled cells and the 1kwh bike pack.
Let me know your opinion. Thx.
I want to introduce myself to the forum. This is the first time ever i am writingsomething in a forum like that, i understand the benefits of swapping information regarding the same topics. I read a lot of stuff about batteries the last couple of weeksand how to safely handle them. I am scared but also fascinated about these cells and when you never risk something you will never get rewarded. I am 35 years old engineer and studied some mechatronics and machine tools stuff. So i have a little background in electronics, but not batteries. I did a lot of Rasperry and Arduino Projects and stuff like this.this is how i get here.
My first plan is to replace my car by a ebike (one full gas tank =, i will need a good battery for that bafang 1kw motor i ordered.
Second plan buy the house we are in, put a pv system on the roof and build a diy powerwall in my garage.
With the heat pump,pv system, powerwall and the ebike iwould be almost CO2 neutral. Would I?
i want to do this mostly with recycled batteries if i can, from a green view i like this idea very much.
Icollected about 150 cells and ordered 100 new Samsung INR18650-25E.Checkedall cells on capacity, self discharging and internal resistance and tried to decide which ones are the good and bad ones. not that easy than i thought it was. Does the internal resistance change over the battery lifetime? Is comparing the capacity with its original capacitya good indicator? Still a long way to go.
I alsomade a deal with an ebike shop and i can pick up their "old" ebike accumulators. go there tomorrow to get the first few.
thanks to all who share your information and journey through this secondstoragelife. and averagejoe and hppowerwall about their fantastic videos.
my way would be to spotweld the fuses to the battery
. can i do that?i ordered also some of these chinese spotwelders. any bets how long it will last?Is it also good to fuse every cell in the ebike battery? How would that work with the nickel strips?
one last question. i know theSamsung INR18650-25E isn't the best joice for that ebike batterie. but would it work with a 14s7p configuration and the bafang motor? 20A cont, 56A peak? The bbshd motorwould need 30A max. or am i wrong? Continous?
Also a few pics from my journey:
My DIY Lab, recycled cells and the 1kwh bike pack.
Let me know your opinion. Thx.
